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Fluorescent images of Lactobacillus rhamnosus GG (control) and Lactobacillus plantarum MCC3011 (Test) (A) 48 h mature biofilms in phosphate buffered saline, (B) DNase I-treated and incubated for one hour, (C) proteinase K-treated and incubated for one hour. The cells viewed under fluorescent filters (3) with ×100 magnification and scale (2 μ).
